18710739840 has 256 divisors, whose sum is σ = 65286446400. Its totient is φ = 4529848320.

The previous prime is 18710739757. The next prime is 18710739851. The reversal of 18710739840 is 4893701781.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 18710739840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1516416 + ... + 1528704.

Almost surely, 2^18710739840 is an apocalyptic number.

18710739840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18710739840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32643223200).

18710739840 is an abundant number, since it is smaller than the sum of its proper divisors (46575706560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18710739840 is a wasteful number, since it uses less digits than its factorization.

18710739840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12385 (or 12373 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 18710739840 in words is "eighteen billion, seven hundred ten million, seven hundred thirty-nine thousand, eight hundred forty".